SYNTHLUCIDA TRIP COST is a free car trip cost calculator. Based on a manually entered distance, your vehicle's fuel consumption, and the fuel price, the app calculates the total cost of a trip, optionally including a round trip and extra expenses. The app doesn't use any maps or navigation API — you enter the distance yourself. The whole calculation runs directly in your browser.
The app doesn't collect or send any personal data to a server. Specifically:
The app stores the following in your browser's localStorage (locally on your device, not on a server):
This data never leaves your browser, and the app has no access to it from anywhere else. You can remove it by clearing the site's data in your browser settings.
You can export your calculations and saved routes as PDF, CSV, or a full JSON backup, which can later be imported back the same way, for example when switching to a new device. Both export and import happen locally in your browser — the app never sends any of these files anywhere on its own; it only offers them to you for download, or processes a file you upload yourself.
The app loads fonts from Google Fonts (fonts.googleapis.com). Loading the page therefore sends a standard request to Google's servers, which is common practice for most sites using custom fonts. Aside from that, the app loads no other external scripts or tracking code.
If you run into a bug or have any question about privacy or how the app works, please reach out via the contact form on synthlucida.com. We'll do our best to sort it out quickly.